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/* libs/graphics/animator/SkOperandInterpolator.h
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#ifndef SkOperandInterpolator_DEFINED
#define SkOperandInterpolator_DEFINED
#include "SkDisplayType.h"
#include "SkInterpolator.h"
#include "SkOperand.h"
class SkOperandInterpolator : public SkInterpolatorBase {
public:
SkOperandInterpolator();
SkOperandInterpolator(int elemCount, int frameCount, SkDisplayTypes type);
SkOperand* getValues() { return fValues; }
int getValuesCount() { return fFrameCount * fElemCount; }
void reset(int elemCount, int frameCount, SkDisplayTypes type);
/** Add or replace a key frame, copying the values[] data into the interpolator.
@param index The index of this frame (frames must be ordered by time)
@param time The millisecond time for this frame
@param values The array of values [elemCount] for this frame. The data is copied
into the interpolator.
@param blend A positive scalar specifying how to blend between this and the next key frame.
[0...1) is a cubic lag/log/lag blend (slow to change at the beginning and end)
1 is a linear blend (default)
(1...inf) is a cubic log/lag/log blend (fast to change at the beginning and end)
*/
bool setKeyFrame(int index, SkMSec time, const SkOperand values[], SkScalar blend = SK_Scalar1);
Result timeToValues(SkMSec time, SkOperand values[]) const;
SkDEBUGCODE(static void UnitTest();)
private:
SkDisplayTypes fType;
SkOperand* fValues; // pointer into fStorage
#ifdef SK_DEBUG
SkOperand(* fValuesArray)[10];
#endif
typedef SkInterpolatorBase INHERITED;
};
#endif // SkOperandInterpolator_DEFINED
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